CN105089570B - water control device for oil extraction system - Google Patents
water control device for oil extraction system Download PDFInfo
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- CN105089570B CN105089570B CN201410198699.7A CN201410198699A CN105089570B CN 105089570 B CN105089570 B CN 105089570B CN 201410198699 A CN201410198699 A CN 201410198699A CN 105089570 B CN105089570 B CN 105089570B
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- throttling element
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Abstract
Water control device for oil extraction system of the invention, including base tube, pipe sleeve, throttling element, throttling element include throttling element ontology；The feed pathway of arc on throttling element ontology is set, is used to receive formation fluid, is provided with throttle nozzle between the arrival end and outlet end of feed pathway；The intake tunnel being connected with the outlet end of feed pathway, for receiving the water in formation fluid；The outlet of the inner radial of feed pathway is set；Oil inlet passage is connected with throttle nozzle, so that the oil in formation fluid to be transported in outlet.Since the throttling element is to shunt oil and water by the physical difference of viscosity and density between oil, water, which has the ability of identification formation fluid and active control, achievees the purpose that distinguish draining, and then improve control water efficiency.
Description
Technical field
The present invention relates to a kind of water control devices for oil extraction system.
Background technique
The inflow velocity that formation fluid is controlled by water control device is usually required, in oil extraction system to meet production need
It wants.The water control device applied in the prior art one based on oil nozzle type water control device.But oil or water flow oil inlet nozzle type control water
When device, the channel that the two flows through is identical, and the control water specific aim that will lead to oil nozzle type water control device in this way is poor.
Therefore, how to solve the problems, such as that water control device control water specific aim is poor, be the skill that those skilled in the art need to solve
Art problem.
Summary of the invention
In view of the above-mentioned problems, the invention proposes a kind of water control devices that control water efficiency can be improved.
Water control device for oil extraction system of the invention, including throttling element, the throttling element include: throttling element ontology；
The feed pathway of arc on the throttling element ontology is set, is used to receive formation fluid, and in the feed pathway
Arrival end and outlet end between be provided with throttle nozzle；The intake tunnel being connected with the outlet end of the feed pathway is used
Water in reception formation fluid；The outlet of the inner radial of the feed pathway is set；Oil inlet passage, with the section
Flow nozzle is connected, so that the oil in formation fluid to be transported in the outlet.
In one embodiment, the outside wall surface of the intake tunnel is the arc outer wall being made of at least one arch section
Face is smoothly connected with the outside wall surface of feed pathway.
In one embodiment, one end of the outer wall of the intake tunnel and the outer wall of the feed pathway are smoothly connected,
The other end is connect with the inner wall smooth of the feed pathway, to be configured to substantially into circular annular chamber, and the throttling
Nozzle is connected to the annular chamber, and the outlet is located at the middle part of the annular chamber.
In one embodiment, the feed pathway is equipped with multiple, and is evenly distributed around the circumferential direction of the annular chamber.
In one embodiment, the width of the feed pathway is gradually reduced along arrival end to outlet extreme direction.
In one embodiment, the throttle nozzle is the opening of the inner wall through the feed pathway.
In one embodiment, the throttling element ontology is plate, and the upper surface of the throttling element ontology is equipped with and can be formed
The protrusion of the feed pathway, the intake tunnel and the oil inlet passage.
In one embodiment, at least one ring baffle is equipped in the annular chamber, the ring baffle, which is equipped with, to be lacked
Mouthful, it is configured so that oil flows into the outlet by the notch.
In one embodiment, multiple ring baffles concentrically with respect to one another, two neighboring annular are equipped in the annular chamber
Notch on baffle is inversely proportional with the angle of the line angle of the outlet and the sticky size of oil.
It in one embodiment, further include annular pipe fitting, circumferential direction of the plurality of throttling element along the annular pipe fitting
It is arranged on the annular pipe fitting, and the outlet of each throttling element is connected to the inner space of the annular pipe fitting.
In one embodiment, on the outlet and the annular pipe fitting of two opposite throttling elements between same end
It is equidistant, and the distance between same end is differed on the outlet and the annular pipe fitting of two adjacent stream parts.
In one embodiment, the throttling element passes through the multiple protrusions positioning being arranged on the annular pipe fitting, and
Formation fluid flows into the throttling element from the gap between two neighboring protrusion.
In one embodiment, the throttling element is equipped with for blocking each channel, thus make formation fluid from it is described into
The upper cover that the entrance in liquid channel flows into.
Compared with the existing technology, the water control device for oil extraction system of the invention includes throttling element.Throttling element includes section
Flow part ontology, feed pathway, oil inlet passage, intake tunnel, throttle nozzle and outlet.The shape of feed pathway is arc, if
It sets on throttling element ontology, and for receiving formation fluid.Intake tunnel is connected with the outlet end of feed pathway, for receiving ground
Water in layer fluid.The inner radial of feed pathway is arranged in outlet.Throttle nozzle is located at the arrival end of feed pathway and goes out
Between mouth end.Oil inlet passage is connected to by throttle nozzle with feed pathway, and is connected to outlet, so as to will be in formation fluid
Oil is transported to outlet.Since the viscosity of water is small, density is big, and the viscosity of oil is big, density is small, therefore the inertia of water is big, and oily
Inertia it is small.When formation fluid flows in feed pathway, the outer wall of feed pathway is larger to the resistance of oil, to the resistance of water
It is smaller.In this way, oil can flow into oil inlet passage by throttle nozzle, and water can flow into intake tunnel along feed pathway, to make
It obtains oily, water energy and enough passes through different channel outflows, and then conveniently controlled individually for water.
Detailed description of the invention
The invention will be described in more detail below based on embodiments and refering to the accompanying drawings.In figure:
Fig. 1 is the structural schematic diagram of the throttling element in the present invention；
Fig. 2 is the top view of the throttling element in the present invention；
Fig. 3 is the structural schematic diagram of the upper cover in the present invention；
Fig. 4 is the structural schematic diagram of the pipe sleeve in the present invention；
Fig. 5 is the use state diagram of water control device of the invention.
In the accompanying drawings, identical component uses identical appended drawing reference.Attached drawing is not according to actual scaling.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings.
It as shown in Figures 1 and 2, include throttling element provided by the present invention for the water control device of oil extraction system.Throttling element packet
Include throttling element ontology 1 and be separately positioned on throttling element ontology 1 feed pathway 2, intake tunnel, oil inlet passage, throttle nozzle
11 and outlet 6.
The shape of throttling element ontology 1 can be plate.In one example, throttling element ontology 1 can be arc panel, with section
Save installation space.In addition, throttling element ontology 1 or plate, to facilitate processing.On throttling element ontology 1 be arranged protrusion with
Form each channel.It is arranged in this way, can be convenient processing, it is time saving and energy saving.Protrusion height can according to enter throttling element
The size of fluid flow and the moisture content of fluid specifically set.Through-hole is set on throttling element ontology 1 and forms outlet 6, with
Facilitate processing.Those skilled in the art are easy to determine the size and number of outlet 6 according to the flow for entering throttling element fluid.
In a specific embodiment, throttling element ontology 1 is divided into three parts by two annular grooves.Positioned at throttling element ontology
1 it is innermost be first part, adjacent with first part for second part, on the outermost side is Part III.First
Divide for outlet 6 and each channel to be arranged.Annular groove is set between second part and Part III, in this way by third portion
When point being welded on fixing piece, it is possible to reduce because Part III temperature is excessively high, second part and first part is caused to generate deformation
The phenomenon that.
The shape of feed pathway 2 is set as arc.When formation fluid flows in feed pathway, the outer wall pair of feed pathway
The resistance of oil is larger, and smaller to the resistance of water.In this way, oil can flow into oil inlet passage by throttle nozzle 11, and water can be along
Feed pathway flows into intake tunnel, so that oil, water pass through different path outflows respectively.Since the throttling element is to pass through
The physical difference separation oil of oil, the viscosity between water and density and water, therefore the control of oil, water can be improved in the water control device
Specific aim, so as to improve control water efficiency.In addition, the width of feed pathway 2 is gradually reduced along arrival end to outlet extreme direction.
So set, having the function of increasing on-way resistance, it is possible to reduce the influx of high sticky layer fluid.Furthermore it is also possible to increase
The current difference of oil and water, to further increase the shunting effect of oil, water.
Oil inlet passage passes through the throttle nozzle 11 being arranged in feed pathway 2 and is connected to feed pathway 2, to facilitate oil from section
Flow nozzle 11 flows into oil inlet passage.And oil inlet passage is connected to outlet 6, after oil stream enters feed pathway 2, then from outlet
6 outflows.Wherein, throttle nozzle 11 is the opening on the inner wall of feed pathway 2.
The outlet of intake tunnel and feed pathway 2 flows into intake tunnel from feed pathway 2 so that water energy is enough.One
In a embodiment, the outside wall surface of intake tunnel is the arc outer wall face being made of at least one arch section, with feed pathway 2
Outside wall surface be smoothly connected.Wherein, it is directly outer with intake tunnel when the outside wall surface of intake tunnel refers to that water flows into intake tunnel
The face that wall 5 contacts.It is directly outer with feed pathway 2 when the outside wall surface of feed pathway 2 refers to that formation fluid flows into feed pathway 2
The face that wall 4 contacts.So set, the path that water can be made to be flowed through is elongated, and can be such that the chock pressure difference of water is substantially improved,
To further promote control outlet capacity.
Certainly, in the outside wall surface junction of the outside wall surface of feed pathway 2 and intake tunnel, can also be arranged one section respectively with
The outside wall surface of intake tunnel and the tangent plane of the outside wall surface of feed pathway 2.To further increase the stratum for entering intake tunnel
The tangential velocity of fluid, and then further increase flow resistance of the water in throttling element.
In one embodiment, the first part of throttling element ontology 1 is equipped with multiple feed pathways 2.The outer wall of intake tunnel
The one end in face and the outside wall surface of feed pathway 2 are smoothly connected, and the other end and the inner wall 3 of another feed pathway 2 are smoothly connected.From
And it constitutes substantially at circular annular chamber 12.It, can be along the outer wall of intake tunnel after water flows into annular chamber 12 from feed pathway 2
5 and feed pathway 2 inner wall 3 flow.So set, structure is simple, and water can be promoted to revolve in 12 high speed of annular chamber
Turn of tidal stream is dynamic, and water is forced to flow out throttling element after largely rotating.Feed pathway 2 be equipped with it is multiple, and along the week of annular chamber 12
To being uniformly distributed.In this way, after can preventing water from flowing into intake tunnel, because the flowing velocity of water caused by frictional resistance slows down, in turn
The phenomenon that causing oil, water shunting effect to be deteriorated.
It is smaller to the resistance of oil when the water in annular chamber 12 is less.In this way, after oil is flowed out from throttle nozzle 11,
It can directly be flowed into outlet 6 along straight line.It is larger to the resistance of oil when the water in annular chamber 12 is more.In this way, when oil from
After throttle nozzle 11 flows out, it can be flowed together with water around the cavity wall of annular chamber 12.During flowing, the biggish water of density
It rotates on the outside, and the relatively small oil of density can be to center flow, until flowing into outlet 6.
Since oil is after the inflow annular chamber 12 of throttle nozzle 11, can be moved closer in rotary course in annular chamber 12
Portion.Therefore, outlet 6 is arranged on the medium position of annular chamber 12.When oil stream is after into throttle nozzle 11, directly from annular
Chamber 12 flows into outlet 6.
Further, it is equipped at least one ring baffle 7, in annular chamber 12 to further enhance water in annular chamber 12
Rotational flow, delay water from the outlet 6 for being flowed into throttling element in annular chamber 12.Notch is opened up on ring baffle 7, with
Oil is set to flow into outlet 6.When being equipped with multiple concentric ring baffles 7, the ring baffle 7 nearest apart from feed pathway 2
On notch it is opposite with the notch on the inner wall 3 of feed pathway 2, to reduce 7 pairs of oily resistances of ring baffle.And two neighboring ring
The angle of the line angle of the outlet 6 of notch and throttling element on shape baffle 7 and the viscosity of oil are inversely proportional.That is, oil
Viscosity is bigger, then the angle of angle is smaller.In this way, certain caching can be played to oil, reduces while flowing into discharge
The amount of liquid of mouth 6 extends the aqueous oil recovery phase to delay bottom water coning.And the exploitation of aqueous well, old well, control are contained
The higher oily well yield of water, and the recovery etc. of oil well that stops production by high water play the role of it is preferable.
As shown in figure 3, in one embodiment, upper cover 8 is arranged in the top of the first part of throttling element ontology 1.Upper cover 8
It is buckled in above protrusion, side wall can be bonded with the inner sidewall of second part.In this way, can prevent formation fluid from channel its
He flows into each channel in position.
The water control device further includes the annular pipe fitting for throttling element to be arranged.So set, can first in the production line will
Throttling element is assembled on annular pipe fitting, and when needing using water control device, directly annular pipe fitting is located on pipeline.It will section
When stream part is mounted on annular pipe fitting, the outlet of throttling element is connected to the inner space of annular pipe fitting.
As shown in figure 4, in one embodiment, annular pipe fitting is the pipe sleeve 9 that can be set on the outside of pipeline.In pipe sleeve
Multiple throttling elements are circumferentially with along it on 9, to increase the inflow total amount of formation fluid.Pipe sleeve 9 is equipped with protrusion 10, in throttling element
The Part III of ontology 1 is equipped with the through-hole for protrusion 10 to be arranged.Throttling element is positioned by protrusion 10 and through-hole.By throttling element
When being fixed on pipe sleeve 9, the protrusion 10 on pipe sleeve 9 protrudes from the Part III of throttling element ontology 1, so that formation fluid passes through pipe
Gap on set 9 between two neighboring protrusion 10 flows into the feed pathway 2 of throttling element.In such manner, it is possible to the inflow to formation fluid
Play the role of arrangement and current limliting, prevent from flowing into throttling element formation fluid is excessive, flow velocity is excessively high, to influence the section of throttling element
Stream, and then influence to delay bottom water coning.
And when being fixed on throttling element on pipe sleeve 9, on the outlet 6 and pipe sleeve 9 of each throttling element between same end
Distance differs.In this way, can cancel out each other a part when oil is flowed out from each outlet 6 to the impact force of pipeline inner wall, thus
Reduce the erosion to pipeline.
As shown in figure 5, pipe sleeve 9 is set on base tube 13 when needing using water control device.It is set in the outside of throttling element
There is housing 14.One end sealing of housing 14 is fixed on base tube 13.Formation fluid passes through the gap between housing 14 and throttling element
Flow into throttling element.When housing 14 is set, the length of housing 14 can be made to be longer than throttling element, with can housing 14 and throttling element it
Between setting be used for containing formation fluid accommodating chamber 15.In such manner, it is possible to play caching to formation fluid, control water is further enhanced
The control water effect of device.
Although by reference to preferred embodiment, invention has been described, the case where not departing from the scope of the present invention
Under, various improvement can be carried out to it and can replace component therein with equivalent.Especially, as long as there is no structures to rush
Prominent, items technical characteristic mentioned in the various embodiments can be combined in any way.The invention is not limited to texts
Disclosed in specific embodiment, but include all technical solutions falling within the scope of the claims.
Claims (9)
1. a kind of water control device for oil extraction system, including throttling element, the throttling element include:
Throttling element ontology；
The feed pathway of arc on the throttling element ontology is set, is used to receive formation fluid, and in the feed liquor
Throttle nozzle is provided between the arrival end and outlet end in channel；
The intake tunnel being connected with the outlet end of the feed pathway is used to receive the water in formation fluid；Feed pathway
Width is gradually reduced along arrival end to outlet extreme direction；
The outlet of the inner radial of the feed pathway is set；
Oil inlet passage is connected with the throttle nozzle, so that the oil in formation fluid to be transported in the outlet；
It further include annular pipe fitting, wherein multiple throttling elements are arranged along the circumferential of the annular pipe fitting in the annular pipe fitting
On, and the outlet of each throttling element is connected to the inner space of the annular pipe fitting；
The outlet of two opposite throttling elements is equal with the distance between same end on the annular pipe fitting, and adjacent two
The distance between same end is differed on the outlet of a throttling element and the annular pipe fitting；
The throttling element is equipped with for blocking each channel, so that it is upper to flow into formation fluid from the entrance of the feed pathway
Lid.
2. water control device according to claim 1, which is characterized in that the outside wall surface of the intake tunnel is by least one
The arc outer wall face that arch section is constituted, is smoothly connected with the outside wall surface of feed pathway.
3. water control device according to claim 1 or 2, which is characterized in that one end of the outer wall of the intake tunnel and institute
The outer wall for stating feed pathway is smoothly connected, and the other end is connect with the inner wall smooth of the feed pathway, thus be configured to substantially at
Circular annular chamber, and the throttle nozzle is connected to the annular chamber, and the outlet is located at the middle part of the annular chamber.
4. water control device according to claim 3, which is characterized in that the feed pathway be equipped with it is multiple, and around described
The circumferential direction of annular chamber is evenly distributed.
5. water control device according to claim 1, which is characterized in that the throttle nozzle is through the feed pathway
The opening of inner wall.
6. water control device according to claim 1, which is characterized in that the throttling element ontology is plate, the throttling element
The upper surface of ontology is equipped with the protrusion that can form the feed pathway, the intake tunnel and the oil inlet passage.
7. water control device according to claim 4, which is characterized in that be equipped at least one annular gear in the annular chamber
Plate, the ring baffle are equipped with notch, are configured so that oil flows into the outlet by the notch.
8. water control device according to claim 7, which is characterized in that be equipped in the annular chamber it is multiple concentrically with respect to one another
Ring baffle, the angle of the line angle of notch and the outlet on two neighboring ring baffle and the viscosity of oil are big
It is small to be inversely proportional.
9. water control device according to claim 1, which is characterized in that the throttling element is by being arranged in the annular pipe fitting
On multiple protrusions position, and formation fluid flows into the throttling element from the gap between two neighboring protrusion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410198699.7A CN105089570B (en) | 2014-05-12 | 2014-05-12 | water control device for oil extraction system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410198699.7A CN105089570B (en) | 2014-05-12 | 2014-05-12 | water control device for oil extraction system |
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| Publication Number | Publication Date |
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| CN105089570A CN105089570A (en) | 2015-11-25 |
| CN105089570B true CN105089570B (en) | 2018-12-28 |
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| CN201410198699.7A Active CN105089570B (en) | 2014-05-12 | 2014-05-12 | water control device for oil extraction system |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107939350B (en) * | 2016-10-12 | 2020-03-31 | 中国石油化工股份有限公司 | Selective inflow controller and completion string incorporating same |
| CN106567689A (en) * | 2016-11-18 | 2017-04-19 | 中国石油天然气股份有限公司 | Underground automatic water control valve and automatic water control valve element |
| CN106763884B (en) * | 2017-01-06 | 2019-12-13 | 中国海洋石油集团有限公司 | Oil-stabilizing water control valve |
| CN108253171B (en) * | 2017-12-06 | 2020-02-07 | 中国海洋石油集团有限公司 | Composite channel water control valve |
| CN107829713B (en) * | 2017-12-12 | 2024-05-14 | 东营市瑞丰石油技术发展有限责任公司 | Flow control device for oil extraction and oil extraction device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8276669B2 (en) * | 2010-06-02 | 2012-10-02 | Halliburton Energy Services, Inc. | Variable flow resistance system with circulation inducing structure therein to variably resist flow in a subterranean well |
| US9109423B2 (en) * | 2009-08-18 | 2015-08-18 | Halliburton Energy Services, Inc. | Apparatus for autonomous downhole fluid selection with pathway dependent resistance system |
| US8356668B2 (en) * | 2010-08-27 | 2013-01-22 | Halliburton Energy Services, Inc. | Variable flow restrictor for use in a subterranean well |
| RU2582604C1 (en) * | 2011-12-06 | 2016-04-27 | Хэллибертон Энерджи Сервисиз, Инк. | Well system and method for adjusting the flow of bi-action fluid |
| US9234404B2 (en) * | 2012-02-29 | 2016-01-12 | Halliburton Energy Services, Inc. | Downhole fluid flow control system and method having a fluidic module with a flow control turbine |
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